1896139340 has 24 divisors (see below), whose sum is σ = 3997767312. Its totient is φ = 755432000.

The previous prime is 1896139331. The next prime is 1896139361. The reversal of 1896139340 is 439316981.

It is a junction number, because it is equal to n+sod(n) for n = 1896139291 and 1896139300.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183839 + ... + 193878.

It is an arithmetic number, because the mean of its divisors is an integer number (166573638).

Almost surely, 2^1896139340 is an apocalyptic number.

1896139340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1896139340 is an abundant number, since it is smaller than the sum of its proper divisors (2101627972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1896139340 is a wasteful number, since it uses less digits than its factorization.

1896139340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377977 (or 377975 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 1896139340 is about 43544.6821093001. The cubic root of 1896139340 is about 1237.7228716705.

The spelling of 1896139340 in words is "one billion, eight hundred ninety-six million, one hundred thirty-nine thousand, three hundred forty".